Table 4 Water quality parameters of dye decolourisation.
Quality parameter | Waters quality | |||
|---|---|---|---|---|
Min 5 | Min 10 | Min 15 | Min 20 | |
pH | 2.4 | 3.8 | 4.8 | 5.8 |
Color | 100% | 97% | 91% | 80% |
Biochemical oxygen demand (BOD5) | 5 mg/L | 16 mg/L | 23 mg/L | 34 mg/L |
Chemical oxygen demand (COD) | 94 mg/L | 163 mg/L | 217 mg/L | 250 mg/L |
Transparency | 28% | 53% | 81% | 100% |
Sodium Absorption Ratio (SAR) | 8 | 16 | 20 | 26 |
